This stuff is great!! I haven't tried many distortion pedals but i like this one. It has 2 distortion modes: mode1 is good for heavy stuff with lots of lows. The mode 2 i like most: yeah.. it's true in other reviews, it's a bit trebly but you can adjust it with the tone knob.
I use this pedal playing old Metallica stuff (requires a bit more lows on the amp) and even playing AC/DC stuff too. I think this pedal is cool for plaing in many styles. It also makes good solos with a reverber.

Nothing, i like it.

Yeah it's a Boss quality. This thing is tough and hard to brake It's metal, with rubber bottom.

I think this pedal is one of the best. Good for light distortion to Heavy or speed metal. It's worth to buy.